01-27-2015 10:49 AM
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  1. Windows Central Question's Avatar
    I've had my band for several days, the only issues that has jumped out is the heart monitor. It doesn't change much, even during heavy exercise. I thought I might have a bum band, but it sounds like others are seeing the same thing.
    01-10-2015 11:02 PM
  2. Noahma's Avatar
    Mine seems to be fairly accurate. I have yet to bring it out on a bike ride, but normal actions seem to be very close to what I calculate.
  3. Jazmac's Avatar
    Where did you hear this?
    Likwidz, ven07 and Laura Knotek like this.
    01-11-2015 02:16 AM
  4. Noahma's Avatar
    Mine seems to be fairly accurate. I have yet to bring it out on a bike ride, but normal actions seem to be very close to what I calculate.
    Laura Knotek, Likwidz and ven07 like this.
    01-11-2015 02:21 AM
  5. DroidUser42's Avatar
    Where did you hear this?
    That it's inaccurate? How about the Heart Rate Extremely Inaccurate, Microsoft Says Band is Entry-Level Device thread.

    My own finding is that depending on the motion involved, it can be highly inaccurate.
    ven07 likes this.
    01-11-2015 03:15 AM
  6. Nate Silver's Avatar
    Mine seems reasonably accurate, within the limitations of Optical HR devices. I seriously doubt that any wrist worn tracker is going to challenge a heart rate strap for accuracy when a person is moving vigorously, at least not with the current generation of the tech. My Surge is certainly no better than the Band, might even be worse.
    Likwidz and ven07 like this.
    01-11-2015 05:29 AM
  7. Harrie-S's Avatar
    Also lets be fair. If you go to a hospital and get a condition test (riding a bike) they put all kind of sensors on you and hook it up to a machine. Are you really expect that a wrist devices will get the same accuracy even when used in all kind of no controlled situations?
    Jazmac and ven07 like this.
    01-11-2015 05:40 AM
  8. DroidUser42's Avatar
    I seriously doubt that any wrist worn tracker is going to challenge a heart rate strap for accuracy when a person is moving vigorously,
    I wouldn't rate my walking though the mall as 'vigorously'. And I did a quick test after the firmware upgrade, but after getting a reading of 150 compared to my Polar's 113, I gave up. I don't know what kind of accuracy you think is reasonable, but 150 vs 113 is unacceptable to me when doing a activity as common as walking.
    01-11-2015 03:41 PM
  9. Nate Silver's Avatar
    I wouldn't rate my walking though the mall as 'vigorously'. And I did a quick test after the firmware upgrade, but after getting a reading of 150 compared to my Polar's 113, I gave up. I don't know what kind of accuracy you think is reasonable, but 150 vs 113 is unacceptable to me when doing a activity as common as walking.
    I agree with you, that's out of whack for sure. Haven't noticed that sort of problem with mine, just the typical failure to respond to rapid changes, or lack of response for non-cardio based exercise.
    01-11-2015 04:22 PM
  10. enahs555's Avatar
    I did three sets of tests on a treadmill today. Each for a mile, with run tracking turned on with the GPS off. When the treadmill said one mile, by Band said 0.97, 0.98, and 1.01 miles. Quite accurate without a GPS, I would say. I also grabbed the heart rate monitors on the treadmill a dozen times each run, and it was in agreement with the Band at the given time. I.E. the band would say 163 and the treadmill would say 169, etc. Always within 10 of each other.

    Do you guys have the Band it loose, maybe?
    I moved mine up on the arm and keep it decent tight so it does not bounce around. I have also played with it on backwards, so the screen is on the same side as my palm, and it still seems to get the same results.
    01-11-2015 08:00 PM
  11. jwpear's Avatar
    I've been experimenting with the placement of my Band on its HR accuracy. I was pretty disappointed with how poorly it tracked with my strap when on the treadmill. It seems to do reasonably well on the bike and during weight lifting. I was baffled with its issues on the treadmill.

    This past Saturday, I decided to follow the advice of others and try wearing mine further up my arm--toward my elbow. My Band was about my index fingers width above my wrist bone. That's as far up my arm as I could push my large Band. I did the treadmill for 15 mins or so. It was within 3-5 bpm for most of the time. I was pumped about this success. But at around 12 mins, when I quickly ramped up intensity by pushing the incline to 10 degrees, it struggled. It never really caught up until I moved on to weights.

    In the shot below, you can see my HR gradually ramp up as I ramped up intensity. It was nearly dead on with my strap and with the manual pulse I occasionally took. The 155 mark was the last point the strap and Band were in synch during the treadmill.

    wp_ss_20150111_0001.jpg

    And below is a shot of the treadmill, with HR from my strap, just before I ramped up the incline. It's dead on with Band.
    -pic would be here if upload wasn't failing with 500 error on server--

    I read an article, on Fitbit's site of all places, that mention we have more blood flow in our arm than our wrist. It suggested experimenting with placement on the arm, particularly during exercise, to improve accuracy.

    Help Site - Heart rate FAQs

    My question: why am I not getting this sort of info from the Band team? Ridiculous and irritating.
    Last edited by jwpear; 01-12-2015 at 07:01 PM.
    Red River likes this.
    01-11-2015 08:50 PM
  12. 11B1P's Avatar
    I have also played with it on backwards, so the screen is on the same side as my palm...
    That is not backwards. It is perfectly fine to wear it that way.I wear mine like that all day, every day, during exercising and not exercising.
    01-12-2015 12:46 AM
  13. Jazmac's Avatar
    I agree with you, that's out of whack for sure. Haven't noticed that sort of problem with mine, just the typical failure to respond to rapid changes, or lack of response for non-cardio based exercise.
    I work part time in health care and we have those electronic pressure monitors in our health screening process. However when the doctors see them, they use a manual cuff because they don't accept the results of the Omron 5. Doesn't mean that the readings are wrong, but they do vary. It is the nature of these devices. Why people believe the Band or any other pressure tracking device will be any different is amazing to me.
    01-12-2015 05:53 PM
  14. oldpueblo's Avatar
    I think the band may lag a bit on screen but when you look at the logged activity it looks more accurate. Could be anecdotal.
    01-12-2015 07:58 PM
  15. onlysublime's Avatar
    I've had my band for several days, the only issues that has jumped out is the heart monitor. It doesn't change much, even during heavy exercise. I thought I might have a bum band, but it sounds like others are seeing the same thing.
    you want to test whether it's accurate? count yourself and then compare to what the Band says.

    At rest, count your pulse for 10 seconds and then multiply what number you get by 6. That's your resting heart rate. You want a more accurate count? Count your pulse for 20 seconds and multiply by 3 to get your resting heart rate. According to the National Institute of Health, the average resting heart rate for children 10 years and older, and adults (including seniors) is 60 - 100 beats per minute. Well-trained athletes is 40 - 60 beats per minute

    Your maximum heart rate is about 220 minus your age. You want to stay between 50 percent to 85 percent of your maximum heart rate. This range is your target heart rate.

    I see too many of these comparisons of device X is more accurate than device Y. But they're using one of those 2 devices as the baseline where the actual baseline is measuring your own pulse.
    01-13-2015 01:04 AM
  16. wpguy's Avatar
    I work part time in health care and we have those electronic pressure monitors in our health screening process. However when the doctors see them, they use a manual cuff because they don't accept the results of the Omron 5. Doesn't mean that the readings are wrong, but they do vary. It is the nature of these devices. Why people believe the Band or any other pressure tracking device will be any different is amazing to me.
    Just my own observations of all BP screenings: I really don't understand why medical personnel expect accurate BP readings when the patient's BP is checked first thing upon sitting down in the exam room. I often have to tell the intake provider my numbers are high because of the hike from the waiting room, and a recheck near the end of the intake interview will yield expected numbers. They do it a little begrudgingly, and are then surprised at the difference.
    01-13-2015 03:31 PM
  17. Nate Silver's Avatar
    Just my own observations of all BP screenings: I really don't understand why medical personnel expect accurate BP readings when the patient's BP is checked first thing upon sitting down in the exam room. I often have to tell the intake provider my numbers are high because of the hike from the waiting room, and a recheck near the end of the intake interview will yield expected numbers. They do it a little begrudgingly, and are then surprised at the difference.
    My doctor always does this as a matter of course. He also forgoes the fancy BP machine in favor of the old fashioned cuff and stethoscope.
    01-13-2015 04:19 PM
  18. Broomcorn's Avatar
    Glad I read this before recommending it primarily as a hr monitor. Looking for to the 2nd gen devices
    01-13-2015 06:37 PM
  19. oldpueblo's Avatar
    It's accurate enough for me. 😁



    (Don't judge, it was a quickie)
    Jazmac likes this.
    01-13-2015 07:18 PM
  20. kenjancef's Avatar
    I did a little test earlier this evening. Since I hurt my foot last Monday (actually, the first day I got the Band), I can't run, so I did a stationary bike tonite. About 3-4 minutes in, the Band read about 172, and the machine said 110. I read about making the Band a little tighter if readings were inaccurate, so I did that. Checked on-and-off for the 30 minute ride, and all times the Band and machine were 2-3 beats off.

    I'm still new with it, but I'll do more testing...
    01-13-2015 09:54 PM
  21. Jazmac's Avatar
    Just my own observations of all BP screenings: I really don't understand why medical personnel expect accurate BP readings when the patient's BP is checked first thing upon sitting down in the exam room. I often have to tell the intake provider my numbers are high because of the hike from the waiting room, and a recheck near the end of the intake interview will yield expected numbers. They do it a little begrudgingly, and are then surprised at the difference.
    Its called "White Coat". That uptick is very common in a waiting room where the unknown and or undue worry of a test result or exam always causes your BP to spike. It would be interesting to see the numbers on those people waiting on test results on the Maury show. Might even be a better test of how well the Band works. lol.
    Laura Knotek likes this.
    01-14-2015 02:11 AM
  22. astondg's Avatar
    I got a large Band as I'm in Australia & it was my only option at the time but it's about 0.5-1cm too big. The Band is by no means loose, but it's about the same fit as I would wear my wrist watch. Anyway I find that when the sensor is against my skin (either with the way my wrist is positioned or if I hold it there) then the HR reading is very accurate but if the sensor lifts away a little, so that I can clearly see the green light, then the readings increase by anywhere from 10 to 30BPM more than they should. I think if I had a medium size and could wear it just a little tighter then it would be very accurate for me.

    Even with the looser fit I still get a resting HR overnight of between 41 & 46 BPM which fits very well with the 45 BPM I got hooked up to a proper medical monitor at the hospital a month ago.

    I don't know how tightly everyone wears their Band, and they have to feel comfortable, but it might be something to consider for those with issues.
    Jazmac and teemulehtinen like this.
    01-15-2015 06:18 AM
  23. Madame_X's Avatar
    I've had my Band for two weeks. The first week, everything seemed relatively accurate and my calorie count was falling into what I would expect (somewhat in line with my old Bodybugg). Since the last firmware update, I'm seeing my heart rate soar at certain times of the day and it seems to be affecting the calorie burn. I've gone from burning 2000-2500 calories on a fairly sedentary day to over 4000 most days. Yesterday, it told me I burned 6300 calories! Not even reasonably possible, when the only exercise I had was walking my dogs for less than a mile. I barely hit 5000 steps for the day.

    I have a medium band and wear it as tight as I can get it on my wrist, to the point where it's almost uncomfortable. It's really not doing me much good if it can't even get in the ballpark of how many calories I'm actually burning.
    01-16-2015 10:22 AM
  24. gadgetrants's Avatar
    My 2 cents: I recently hung out with some guys who work in a wearables start-up, and we discussed the challenges of skin-based HR sensors. I came away with a few strong impressions:

    - HR sensing by measuring blood flow is really, really hard
    - HR sensing by measuring blood flow can only estimate HR, at best
    - existing methods -- pretty much all of them -- provide only rough approximations

    I have to admit when I first saw the Band, my heart skipped a beat or two (pun not intended) and I naturally assumed it provided accurate (read: medical grade) biometric output. Certainly, all the promotional info encourages that perception. But my expectations came back down to reality after a few days of using it. I realized, of course, that it's a young technology and we're early adopters. It's definitely OK by me if it's a few more iterations before we can strap something on our wrist and get precise, realtime physiological data.

    In the meantime, something else I learned is that the algorithm REALLY matters. It may turn out that IR methods will get kicked to the curb and eventually replaced (or augmented) by other methods. For example, check out this very cool demonstration of "pulse by motion":



    ​-Matt
    jwpear likes this.
    01-16-2015 11:13 AM
  25. teemulehtinen's Avatar
    That is way strange. dear Madame. Something is wrong. It shouldn't be so much off the reality. I am physically active (3-5 times/week exercising) man weighing 95kg. My non-training day burn (deskwork, occasional outside meeting or lunch, shopping etc. with some 5,000-7,000 steps) is according to the band about 2,300-2,600 calories. On training days it goes from 3,00 to 3,400. The highest burn ever was last week when I woke up at 6am, drove to the mountains, skied for six hours out of which hiking up the mountain for about an hour with boots and skis on and I got it to about 4,500 calories burnt.

    I noticed today at the gym that the band had real trouble getting the heartbeat locked when I wore it under the wrist. I changed it to the normal watch mode half way the workout and it immediately improved tracking. I haven't noticed this before.
    01-16-2015 11:42 AM
  26. Madame_X's Avatar
    After having it register over 9,000 calories burned today (don't I wish?), I finally called support. They had me do a special boot that disconnects it from the battery termporarily. Low and behold, it seems to be accurately reflecting my heart rate again. They set up a follow up call for a few days from now to see if it's still working.

    I will say, support for the Band so far is substantially better than I've experienced with Microsoft on some other issues.
    01-19-2015 10:32 PM
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